Björn Wallsten is a postdoctoral researcher at the Unit of Technology and Social Change at Linköping University, Sweden. He has an MSc in sociotechnical systems engineering and a BA in history from Uppsala University. He is also an appointed member of the Swedish National Committee for History of Technology and Science. So far, Björn’s research has concentrated on urban mining; the focus of his dissertation project was derelict urban infrastructures. Due to their high content of base metals, such as copper and aluminum, these infrastructures are highly relevant from the point of view of recycling. In his work, Björn combines perspectives based on science and technology studies (STS) with environmental systems analysis. Currently, Björn is focusing on Swedish mining politics in his research: specifically, he plans to conduct a case study of Norra Kärr, a highly controversial rare earths mining project close to Lake Vättern in Sweden.